The Lagoon of Venice is separated from the sea by a thin stretch of littoral, the completeness of which is vital for the survival of Venice. This littoral is dramatically threatened by two processes: the erosive attack of the sea, which mainly causes an increase in the bottom slope, and partly by land subsidence, which has reduced the ground elevation. An imbalance between nourishment and erosion is affecting the shore regime, where erosion is prevailing. This is evident in the surveys carried out during the last decades.